java.lang.reflect.UndeclaredThrowableException Maven / Gradle / Ivy
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*
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package java.lang.reflect;
/**
* Thrown by a method invocation on a proxy instance if its invocation
* handler's {@link InvocationHandler#invoke invoke} method throws a
* checked exception (a {@code Throwable} that is not assignable
* to {@code RuntimeException} or {@code Error}) that
* is not assignable to any of the exception types declared in the
* {@code throws} clause of the method that was invoked on the
* proxy instance and dispatched to the invocation handler.
*
* An {@code UndeclaredThrowableException} instance contains
* the undeclared checked exception that was thrown by the invocation
* handler, and it can be retrieved with the
* {@code getUndeclaredThrowable()} method.
* {@code UndeclaredThrowableException} extends
* {@code RuntimeException}, so it is an unchecked exception
* that wraps a checked exception.
*
*
As of release 1.4, this exception has been retrofitted to
* conform to the general purpose exception-chaining mechanism. The
* "undeclared checked exception that was thrown by the invocation
* handler" that may be provided at construction time and accessed via
* the {@link #getUndeclaredThrowable()} method is now known as the
* cause, and may be accessed via the {@link
* Throwable#getCause()} method, as well as the aforementioned "legacy
* method."
*
* @author Peter Jones
* @see InvocationHandler
* @since 1.3
*/
public class UndeclaredThrowableException extends RuntimeException {
static final long serialVersionUID = 330127114055056639L;
/**
* the undeclared checked exception that was thrown
* @serial
*/
private Throwable undeclaredThrowable;
/**
* Constructs an {@code UndeclaredThrowableException} with the
* specified {@code Throwable}.
*
* @param undeclaredThrowable the undeclared checked exception
* that was thrown
*/
public UndeclaredThrowableException(Throwable undeclaredThrowable) {
super((Throwable) null); // Disallow initCause
this.undeclaredThrowable = undeclaredThrowable;
}
/**
* Constructs an {@code UndeclaredThrowableException} with the
* specified {@code Throwable} and a detail message.
*
* @param undeclaredThrowable the undeclared checked exception
* that was thrown
* @param s the detail message
*/
public UndeclaredThrowableException(Throwable undeclaredThrowable,
String s)
{
super(s, null); // Disallow initCause
this.undeclaredThrowable = undeclaredThrowable;
}
/**
* Returns the {@code Throwable} instance wrapped in this
* {@code UndeclaredThrowableException}, which may be {@code null}.
*
*
This method predates the general-purpose exception chaining facility.
* The {@link Throwable#getCause()} method is now the preferred means of
* obtaining this information.
*
* @return the undeclared checked exception that was thrown
*/
public Throwable getUndeclaredThrowable() {
return undeclaredThrowable;
}
/**
* Returns the cause of this exception (the {@code Throwable}
* instance wrapped in this {@code UndeclaredThrowableException},
* which may be {@code null}).
*
* @return the cause of this exception.
* @since 1.4
*/
public Throwable getCause() {
return undeclaredThrowable;
}
}